Up to now, Canon full-frame cameras are \x0d\6D, 5D3, 5DS, 5DSR, 1DX. \x0d\6D is positioned as a non-professional entry-level full-frame camera; \x0d\5D3 is positioned as a high-end professional full-frame camera; \x0d\5DS and 5DSR are positioned as professional full-frame cameras with high pixels, and their direct competitors are medium-format cameras; \x0d\ 1DX is positioned as a high-end flagship camera, mainly shooting at sports photography and eco-photography, which requires a series of harsh requirements such as high continuous shooting speed, powerful focusing system, excellent high-quality image quality and excellent workmanship.